GHI.Premium.Hardware - making a servo move

Archive
1

Hi there,

I have a FEZ Panda II and I have flashed the 4.1 firmware along with all the other steps required.

I managed to get the LED to blink, so I know I am able to write to the board without a problem.

I am trying to power a servo, and having some trouble… I followed this example :

However, GHI.Premium.Hardware did not exist, so I followed the steps about install the 4.2 SDK.

I have got the 4.2 SDK installed (not updated any firmware on my board), and I am still having trouble getting this code to compile.

Could somebody please let me know how I connect to a servo on Di6 and how to make it move please?

If I have not been clear enough, please do ask me questions and I will reply asap.

  • Justin
2

In 4.2, the PWM class is no longer premium it is part of the NETMF core. Change your reference and code to use Microsoft.SPOT.Hardware.PWM.

Welcome to the community!

3

Hi ianlee74,

Apologies for the delayed reply, I’ve had quite a busy day in the office today.

I have tried to add a reference Microsoft.SPOT.Hardware.dll file within the 4.2 folder, however Visual Studio keeps on adding a reference to the file found within the 4.1 folder. I don’t suppose you (or anybody else), would know how to get Visual Studio to grab the files I have chosen by chance? I don’t want to risk trying to register them in the GAC if that might end up causing me more trouble, so would rather ask first.

  • Justin
4

Hey fellow J

You have to stick with 4.1 on the Panda. I have some code floating around but it’s dinner time in Hertfordshire so can’t get to it just yet…

5

Hey Justin,

No problem at all, I’ll be online all evening so if you get a chance to find some sample code for getting a Servo moving with 4.1 later this evening, I would really appreciate it, thank you!

  • Justin
6

Have a squizz here http://www.tinyclr.com/codeshare/entry/53

7

Hey Justin,

Thanks for the link, I got it compiling however I am not sure if I am using it correctly as it’s not moving my servo (and I can confirm the servo moves with an Arduino).

The code I am using is as follows:

public static void Main()
{
var servo = new Servo(FEZ_Pin.PWM.Di6);
while (true)
{
servo.Degree = servo.Degree++;
Thread.Sleep(100);
}
}

Perhaps I am missing something obvious?

  • Justin
8

Hi Justin,

Thanks for your help, it turned out that I needed to supply some extra power to the board to power the servo. Works beautifully, thank you very much!!

  • Justin
9

sweet, yeah servo’s tend to munch thru the power. Enjoy the journey :slight_smile: